病人:男性,22岁。因大量便血1h入院。入院时病人处于休克状态,血压70/30mmHg。经输血及输液后休克好转。于次日行胃镜及纤维结肠镜检查:胃、十二指肠及结肠未见出血。诊断为小肠出血。入院后第3d,病人再次大量便血,血压下降至80/40mmHg,血红蛋白51g/L。经补液、输血后,行剖腹探 Patient: Male, 22 years old. 1h admission due to a large number of blood in the stool. At admission, the patient was in a shock state with a blood pressure of 70 / 30mmHg. After transfusion and infusion improved shock. Gastroscopy and colonoscopy on the next day: no bleeding in stomach, duodenum and colon. Diagnosis of intestinal bleeding. 3d after admission, the patient again a large number of blood in the stool, blood pressure dropped to 80 / 40mmHg, hemoglobin 51g / L. After rehydration, blood transfusion, the line exploration of abdominal exploration